One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,4,7,8)(9,10)(11,15)(12,16)(13,14)(17,18)(19,22)(20,23)(21,24)(27,32)(28,31)(2,6)(4,8)(10,14)(12,15)(17,19,20,24)(18,21,23,22)(25,26,30,29)(27,31,32,28)(9,11)(10,12)(13,16)(14,15)(17,18)(19,22)(20,23)(21,24)(25,27,30,32)(26,31,29,28)(1,3)(2,4)(5,7)(6,8)(9,11)(10,15)(12,14)(13,16)(17,18)(19,21)(20,23)(22,24)(25,28)(26,27)(29,32)(30,31) involution — undirected(1,4)(2,7)(3,6)(5,8)(9,12,13,15)(10,16,14,11)(17,19)(18,22)(20,24)(21,23)(25,29,30,26)(27,28,32,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.